I may lack some experience with barrel inserts, (although I have machined up a few of them) however you likely lack experience with what a good bolt gun can do. Suggesting that a shotgun with a barrel insert can equal the accuracy of a good bolt gun is quite a streach, sounds like something straight out of the marketing department. Barrel inserts are a fun novelty, anyone interested in them should try one, but I wouldn't take one to a BR shoot. Larry
Hmmmm, i "right now" own a Anschutz, (2) Remington 541-S', (2) 540XR's (one that i i shot small bore with and won several matches with) and a few others... I think i know how a bolt action 22 shoots...
Back to the thread... You NEED to get your hands on a Krieghoff insert, and THEN come back and tell us what you think, cause it's NOT something you just "machine up a few", and they sure as he!! aren't a "novelty". They ALSO aren't of BR accuracy, and i never said they were, but the do shoot about like a "decent" bolt gun...
Now, you can keep suggestion i'm a lier, OR you can get your hands on one of the inserts, and LEARN something about what you are talking about.
BTW, i DO know what i'm talking about, because i still have a few of the inserts here, as i use to sell and install them.
DM